I agree with everything you're saying, but it's still the easy route and it's still a poisoned gift, as can be seen by this story. People rather pick the "free" and capable tool than investing time in an open-source solution that needs more work, or developing from scratch. Maybe they just want to reach more platforms to make more money, or use the super advanced tools, but that doesn't change that you're picking the path of least resistance, and you might pay for it in the end.

Chances are, if you're expecting to compete with industry giants on the same level, you're already investing massively into the production of assets and you're project in general. You're just skipping the investment in the engine and tooling. If you just want to make a small game, then maybe you don't even need Unity and would be better off with something more tailored to your project.

I just can't feel sorry for people who walked into this trap. I feel like this pattern has been occurring way too frequently to ignore the danger of "free" tools that really aren't.